General Information


Actigard 50WG is a selective, non-pesticidal systemic compound used for the control of several listed fungal, bacterial, and viral plant diseases. Actigard 50WG is an inducer of host plant resistance. Actigard 50WG exhibits a unique mode of action which mimics the natural systemic activated resistance (SAR) response found in most plant species. Actigard 50WG has no direct activity against target pathogens.



Timing: For best performance, Actigard 50WG should be applied preventively, before disease is observed. An Actigard 50WG application mimics the SAR response in plants. Maximum disease protection is normally obtained 4 days after an Actigard 50WG application.

Application: Actigard 50WG moves systemically within the plant; however; when making foliar applications, uniform spray coverage is essential for best performance. Make no more spray solution than is needed for application. Avoid spray overlap, as crop injury may occur.

Adjuvants: When an adjuvant is to be used with this product, the use of an adjuvant that meets the standards of the Chemical Producers and Distributors Association (CPDA) adjuvant certification program is recommended.

Efficacy: Actigard 50WG provides protection against certain diseases in the crops listed on the label. Actigard 50WG provides sufficient protection to reduce disease levels but should be tank mixed with other registered products with curative activity if disease is present at the time of application, to ensure adequate disease control as well as to broaden the spectrum of disease control.

Integrated Pest Management (IPM): Actigard 50WG should be integrated into an overall disease and pest management strategy whenever the use of a fungicide is required. Cultural practices known to reduce disease development should be followed. Consult your local agricultural authorities for additional IPM strategies established for your area.

Resistance Management

Actigard 50WG exhibits a mode of action uniquely different from currently available fungicides and bactericides. Since Actigard 50WG has no direct activity on plant pathogens, the likelihood that resistance (insensitivity) will develop in the pathogens is low. However, plant pathogens are known to develop tolerance to host plant resistance and to products used repeatedly for control. Because insensitivity development cannot be fully predicted, the use of this product should conform to sensitivity management strategies established for the crop and use area. Such strategies may include rotating and/or tank mixing with products with different modes of action as well as the use of good cultural practices. Consult your local pest control advisor or extension office for details. If insensitivity to this product develops in your area, this product or other products with a similar mode of action may not provide adequate control. If you experience difficulty with control, and insensitivity is a likely cause, consult your local Syngenta Crop Protection representative, local agricultural extension office, or pest control advisor for the best alternative method of control. Syngenta encourages responsible product stewardship to ensure effective long-term disease control.

Crop Tolerance: Although plant tolerance has been found to be acceptable for all crops on the label, not all possible tank-mix combinations have been tested under all conditions. When possible, it is recommended to test the combinations on a small portion of the crop to ensure that a phytotoxic response will not occur as a result of application.


Actigard 50WG may be applied with all types of spray equipment commonly used for making ground and aerial applications. Proper adjustments and calibration of spraying equipment to give good canopy penetration and coverage are essential for good disease control.

Ground Application

- Apply in a minimum of 10 GPA, unless specified otherwise.

- Do not apply through any ultra-low volume (ULV) spray system.

- Thorough coverage is necessary to provide good disease control.

Aerial Application

- Use only on crops where aerial applications are indicated.

- Thorough coverage is necessary to provide good disease protection.

- Apply in a minimum of 10 GPA unless specified otherwise.

- Avoid application under conditions when uniform coverage cannot be obtained or when excessive spray drift may occur.

- Do not apply directly to humans or animals.

- Do not apply through any ultra-low volume (ULV) spray system.

- Avoiding spray drift at the application site is the responsibility of the applicator.

-The interaction of many equipment and weather related factors determine the potential for spray drift.

-The applicator and the grower are responsible for considering all these factors when making decisions.

Application through Irrigation Systems (Chemigation)

- Apply this product only through center pivot, solid set, hand move, moving wheel, micro-sprinkler, or drip irrigation systems. Do not apply this product through any other type of irrigation system.

Crop injury, lack of effectiveness, or illegal pesticide residues in the crop can result from non-uniform distribution of treated water.

- If you have questions about calibration, you should contact State Extension Service specialists, equipment manufacturers, or other experts.

- Applications via Drip Irrigation: The amount of product needed is based on the rate per acre. The rate per 1000 linear feet will vary depending on the row spacing but the rate per acre will be the same. The following table is general guide for the amount of product per 1000 linear feet.

Limitations, Restrictions, and Exceptions


Apply preventively on a 7- to 10-day schedule. Begin applications after thinning. Do not make more than 4 applications per crop.

Notes: Actigard 50WG can be applied by ground, by drip irrigation, by overhead irrigation or by air. Apply in sufficient water to ensure adequate coverage. A minimum of 20 GPA should be used for ground applications and a minimum of 10 GPA should be used for aerial applications. If downy mildew is present in the production area, the first application should be made in tank mixture with another registered downy mildew fungicide. Once activated, the supplemental applications of Actigard 50WG may be applied alone. Banded applications can be made early when plants are small (7-inch proportional band) as long as coverage is adequate.


1) Actigard 50WG should be applied to healthy, actively growing plants.

2) Actigard 50WG should not be applied to plants that are stressed due to drought, excessive moisture, cold weather, or herbicide injury, etc. Do not apply when extended cold or cold and cloudy conditions are expected.

3) Do not use more than one application of Actigard 50WG on head lettuce intended for bag purposes (delayed harvest) due to potential fringe burn.

4) Do not apply prior to thinning or within 5 days of transplanting.

Specific Use Restrictions:

1) Do not apply more than 9.5 oz (0.3 lb ai/A) total per acre per year.

Pre-Harvest Interval

7 days

Restricted Entry Interval

12 hours